Home / 419,312.56-631,769.64-379,382.73

Finding the Fourth Proportional to 419,312.56, 631,769.64 and 379,382.73

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Solution

The fourth proportional to 419,312.56, 631,769.64 and 379,382.73 is: 571,608.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,312.56 : 631,769.64 = 379,382.73 : x
  2. Step 2: Convert to fraction form
    419,312.56/631,769.64 = 379,382.73/x
  3. Step 3: Cross multiply
    419,312.56x = 631,769.64 × 379,382.73
  4. Step 4: Simplify right side
    419,312.56x = 239,682,488,857.40
  5. Step 5: Solve for x
    x = 239,682,488,857.40/419,312.56
  6. Step 6: Final answer
    x = 571,608.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.